rockchip: Enable networking support on rock2 and firefly

Enable the various configuration option required to get the ethernet
interface up and running on Radxa Rock2 and Firefly.
Signed-off-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: NRomain Perier <romain.perier@collabora.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Acked-by: NJoe Hershberger <joe.hershberger@ni.com>

configs/firefly-rk3288_defconfig

@@ -45,6 +45,10 @@ CONFIG_LED=y
 CONFIG_LED_GPIO=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_DM_ETH=y
+CONFIG_NETDEVICES=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_GMAC_ROCKCHIP=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 # CONFIG_SPL_PINCTRL_FULL is not set

configs/rock2_defconfig

@@ -43,6 +43,10 @@ CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_DM_ETH=y
+CONFIG_NETDEVICES=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_GMAC_ROCKCHIP=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 # CONFIG_SPL_PINCTRL_FULL is not set